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ASSESSMENT OF THE ECOLOGICAL STRUCTURE OF THE ORNITHOCOMPLEX DURING THE LATE SUMMER MIGRATION IN THE MOSCOW AND TVER REGIONS

Ecology , UDC: 591.5:591.95:598.2 DOI: 10.24412/2076-9091-2026-262-34-54

Authors

  • Rezanov Alexander Gennadievich Doctor of Biological Sciences, Associate Professor Russian Federation Moscow
  • Zakharova Natalya Yuryevna Candidate of Biological Sciences, Associate Professor Russian Federation Moscow
  • Rezanov Andrey Alexandrovich Candidate of Biological Sciences, Associate Professor Russian Federation Moscow

Annotation

The study of the spatio-temporal structure of bird populations in transformed landscapes remains a priority for ecological monitoring. During the post-breeding dispersal period (August), the avifauna of agrocoenoses is characterized by high dynamics and “patchy” distribution, which complicates objective biodiversity assessment based on local surveys and necessitates large-scale line transects and multivariate statistical analysis. The aim of the study is to identify patterns in population structure and biomass distribution of birds in the agricultural landscapes of the Central Non-Chernozem region (case study of Moscow and Tver regions). Objectives: 1) to conduct a quantitative bird survey along a representative 200 km route; 2) to calculate a set of ecological indices (Shannon, Simpson, Margalef, Pielou, Menhinick, Berger-Parker) and estimate total community biomass; 3) to compare different types of dominance (numerical, weight-based, and spatial) using non-parametric statistical methods. Methods and sampling: Along the 200 km route, 1,185 individuals belonging to 23 species were recorded. The analysis was performed using biodiversity indices and Spearman’s rank correlation. It was established that a representative faunistic core is formed on the transect with a Margalef richness index (DMg = 3.11) and a total biomass of 380.82 kg. A profound disproportion between the numerical and energetic contributions of species was revealed: the numerical dominant is the common starling (Sturnus vulgaris) (47.26 % of the population), the energetic dominant is the white stork (Ciconia ciconia) (34.92 % of the biomass), and the spatial dominant is the common buzzard (Buteo buteo) (maximum encounter frequency of 13). Correlation analysis confirmed a highly significant relationship between abundance and biomass (rs = 0.736; р < 0.001). The study proves the functional connection of the avifaunal complex with the agrocoenoses of the studied regions as components of a shared migratory ecological corridor.
Tags:
agrocoenoses , avian biomass , ecological indices , Moscow and Tver regions , post-breeding dispersal , Spearman correlation , Авифауна

How to link insert

Rezanov, A. G., Zakharova, N. Y. & Rezanov, A. A. (2026). ASSESSMENT OF THE ECOLOGICAL STRUCTURE OF THE ORNITHOCOMPLEX DURING THE LATE SUMMER MIGRATION IN THE MOSCOW AND TVER REGIONS Bulletin of the Moscow City Pedagogical University. Series "Pedagogy and Psychology", № 2 (62), 34. https://doi.org/10.24412/2076-9091-2026-262-34-54
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